fix: obfuscate secret() calls, resolve sensitive config

[rangoo94]

Pull request description

• Correctly resolve sensitive configuration (i.e. something: 'foo' became "foo" before, instead of unquoted foo)
• Include sensitive configuration and secret() calls as sensitive words

Example workflow

kind: TestWorkflow
apiVersion: testworkflows.testkube.io/v1
metadata:
  name: example-sensitive
spec:
  config:
    something:
      type: string
      default: blah
      sensitive: true
  steps:
  - shell: echo '{{ secret("example-secret", "example-key") }} {{ config.something }}'

Result Before

seeeensitve-value "blah"

Result After

****ue ****ah

Checklist (choose whats happened)

• breaking change! (describe)
• tested locally
• tested on cluster
• added new dependencies
• updated the docs
• added a test

Changes

Fixes